CAB to ZIP Converter
Processing entirely on your device — large files may take a moment.
ZIP is the safest archive to share — no special software needed on the receiving end. If your files are still in CAB format, this page is the shortcut: CAB is Microsoft's installer cabinet format — drivers, Windows updates and legacy installers arrive as CAB files.
This converter runs entirely in your browser using WebAssembly — your files never leave your device, nothing is uploaded, and there are no watermarks, sign-ups or queues. Drop in several files at once to convert them as a batch.
How CAB compares to ZIP
| CAB | ZIP | |
|---|---|---|
| Compression | MSZIP / LZX | Deflate / store |
| Encryption | None | ZipCrypto (weak) or AES add-on |
| Bundling | Multi-file with folders | Multi-file with directory tree |
| Best for | Drivers and Windows updates | Universal sharing |
How to convert CAB to ZIP
- 1
Select your files
Drag & drop your CAB files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to ZIP". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted ZIP file individually, or grab everything at once as a ZIP archive.
About the CAB format
CAB (Cabinet) is Microsoft's own archive format, built for software distribution: Windows update packages, device drivers and legacy installers arrive as CAB files. It supports MSZIP, Quantum and LZX compression, and Windows Explorer actually opens it — on Windows.
Everywhere else it is a locked box. Converting CAB to ZIP makes driver payloads and update contents readable on macOS, Linux and phones — useful when you need a driver file on a machine that cannot run the installer.
+ Strengths
- ✓Native to Windows software distribution
- ✓Efficient LZX compression for its era
! Limitations
- −Windows-centric — opaque elsewhere
- −No encryption or recovery features
About the ZIP format
ZIP (PKWARE, 1989) is the archive format the world agreed on: per-file Deflate compression (or plain store), a central directory that lets tools list and extract single files without touching the rest, and thirty-five years of universal support. Windows, macOS, Linux, phones and browsers all open ZIP natively.
Its compression ratio is middle-of-the-road next to 7z, and its encryption story is genuinely mixed: the classic ZipCrypto is broken, while AES-256 works only in tools that opted in. For maximum compatibility of everyday sharing, though, ZIP remains the only safe answer.
+ Strengths
- ✓Opens natively on every platform
- ✓Random access: extract one file, skip the rest
- ✓Thirty-five years of tooling maturity
! Limitations
- −Weaker compression than 7Z/RAR
- −Classic encryption (ZipCrypto) is broken
- −No built-in recovery records
Why convert CAB to ZIP?
Think of it as moving your file to the container that fits the job. Windows-centric — opaque elsewhere ZIP works differently: Opens natively on every platform If any of that sounds like your task, run the conversion — it takes seconds and nothing leaves your device.
Frequently asked questions
Is this CAB to ZIP converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Is there a file size limit for CAB to ZIP?
The only limit is your device's memory, since nothing is uploaded. Files up to a few hundred megabytes work fine on a modern desktop browser; very large files simply take a little longer.
Is there a size limit for archive conversion?
There is no upload cap because nothing is uploaded — the practical limit is your device memory. A few hundred megabytes of unpacked content works comfortably on a modern computer.
Are the files inside my CAB archive modified?
No. Contents are unpacked in memory and repacked into ZIP byte-for-byte — the conversion changes the container, never the files inside it.